PRI has been offering STEM (science, technology, engineering, and math) education programs since 1992. We focus on science education and have become a national leader in Earth systems science education—the wide range of topics covering oceans and atmospheres, rocks and glaciers, and of course life itself. Broad topics of special focus include evolution, ecology and environment, climate and energy, and the public understanding of science. We serve not only K-12 students, but also provide professional development for in-service and pre-service teachers, and activities and resources for classrooms around the country. We participate in both local and national initiatives to improve education practices and increase scientific literacy, such as A Framework for K-12 Science Education and the Earth Science Literacy Initiative.